Bump actions/download-artifact from 4.1.9 to 4.2.1 (#1144)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.9 to 4.2.1.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.1.9...v4.2.1)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/push-master.yml

@@ -395,7 +395,7 @@ jobs:
 
       # Download artifacts from previous build process
       - name: Download artifacts
-        uses: actions/download-artifact@v4.1.9
+        uses: actions/download-artifact@v4.2.1
         with:
           path: artifacts
           pattern: release-artifact-*

.github/workflows/upload-to-github-pages.yml

@@ -148,7 +148,7 @@ jobs:
         with:
           submodules: false
       - name: Download artifacts
-        uses: actions/download-artifact@v4.1.9
+        uses: actions/download-artifact@v4.2.1
         with:
           path: repo
           pattern: release-artifact-*